I write 3-4 days a week, 4-5 hours at a time (with lots of...

I write 3-4 days a week, 4-5 hours at a time (with lots of breaks). My goal is 2000 words when I sit down to write and usually, I hit that, though it can take anywhere from 3-7 hours to get there. I usually know the basics of where the story is going, but the specifics just sort of come to me as I write.